Programming VIP

There are 13 links in the Spring bean life cycle Stage 1: Bean meta information configuration stage Stage 2: Bean meta information parsing stage Phase 3: register the Bean into the container Phase 4: BeanDefinition merge phase Phase 5: Bean Class loading phase Stage 6: Bean instantiation stage (2 small stages) Pre instantiation stage ...

1, Background In writing RPC framework, dubbo's idea is used for reference, and dubbo's implementation is based on Spring Schema. So you need to know how to extend Spring Schema based on Spring. 2, Revenue You can better understand the schema syntax in Spring and write your own framework in the process of integrating Spring. 3, Principle 3 ...

Spring Learning Notes - Auto-assemble Bean Auto-assembly is one way Spring meets bean dependencies Spring automatically finds and assembles properties for bean s in the context There are three ways to assemble in Spring Explicit Configuration in xmlExplicit Configuration in JavaImplicit automatic assembly of bean s ByName Auto-assemble ...

7, IOC of spring <bean id="hello" class="com.wang.bean.Hello" scope="singleton" init-method="init" autowire="byType" destroy-method="destroy"> <property name="userName" value="spring"></property> </bean> Container usage 1: create the object of the container and t ...

What is circular dependency? Very simply, object A depends on object B, and object B depends on object A. For example: //A relies on B class A{   public B b; } //B relies on A class B{   public A a; } If Spring is not considered, circular dependency is not a problem, because it is normal for objects to depend on each other. For example: A  ...

Scope of Bean In Spring, the main bodies that make up the application and the objects managed by the Spring IOC container are called bean s. Simply put, a bean is an object initialized, assembled, and managed by the IOC container Among the several scopes, the request and session scopes are only used in web-based applications (don't care what ...